RustyMustard
Junior Member
Hi all, yesterday i got a fresh load of dollar foam, and this morning i decided to build something.
At first i built a Nutball, since it's such an easy build, took about 20 minutes. I flew a few laps around my yard and it flew great, but i still wasn't really feeling it today, so i ducked back in, grabbed a sheet, and decided to try something a bit different.
The Sky Diamond is the result of a few minutes of measuring and scoring.
28" WS
20" Root
4" Tip
2"x 7" Elevons with foam hinges
700mah RX pack, Orange RX, and two 9g servos
4 oz AUW
6.25 CG
This thing is a real floater, it seems to respond to the slightest of air, yet is incredibly stable and solid. It's a flat sheet, no airfoil, and it glides absolutely perfectly when right on CG. It's also not as picky about the CG as most wings. I haven't given it a proper maiden yet, but i tossed it out over my yard and found it's got a great glide. I was able to find a bit of lift off a slight breeze over my mulberry tree and it responded by gaining altitude without pitch change. Since it's flat plate it also seems to penetrate well, and picks up speed nicely if i push the nose over.
This thing is trainer stable, while it responds well, banging the sticks doesn't throw it off. I don't think it'll loop or roll, but it may work out as a great primary trainer.
I also did the surfaces on it without tape, i just used the round part of my needlenose pliers to mash the hinge line down on both sides and make a solid foam hinge.
Building is also a simple affair, it takes less than a single sheet and basically folds together like foam origami. There are only 7 full depth cuts, all straight lines, and 4 half depth score cuts where it's folded.
I'm going to draw up some plans for this thing soon, after this week i get 5 day weekends and 2 day workweek, i'll have plenty of time, and also build a future version with a 64mm EDF as a parkjet. You crafty builders can probably just look at the pic and see exactly how it's done, with a few through cuts and some score cuts at the bends.
At first i built a Nutball, since it's such an easy build, took about 20 minutes. I flew a few laps around my yard and it flew great, but i still wasn't really feeling it today, so i ducked back in, grabbed a sheet, and decided to try something a bit different.
The Sky Diamond is the result of a few minutes of measuring and scoring.
28" WS
20" Root
4" Tip
2"x 7" Elevons with foam hinges
700mah RX pack, Orange RX, and two 9g servos
4 oz AUW
6.25 CG
This thing is a real floater, it seems to respond to the slightest of air, yet is incredibly stable and solid. It's a flat sheet, no airfoil, and it glides absolutely perfectly when right on CG. It's also not as picky about the CG as most wings. I haven't given it a proper maiden yet, but i tossed it out over my yard and found it's got a great glide. I was able to find a bit of lift off a slight breeze over my mulberry tree and it responded by gaining altitude without pitch change. Since it's flat plate it also seems to penetrate well, and picks up speed nicely if i push the nose over.
This thing is trainer stable, while it responds well, banging the sticks doesn't throw it off. I don't think it'll loop or roll, but it may work out as a great primary trainer.
I also did the surfaces on it without tape, i just used the round part of my needlenose pliers to mash the hinge line down on both sides and make a solid foam hinge.
Building is also a simple affair, it takes less than a single sheet and basically folds together like foam origami. There are only 7 full depth cuts, all straight lines, and 4 half depth score cuts where it's folded.
I'm going to draw up some plans for this thing soon, after this week i get 5 day weekends and 2 day workweek, i'll have plenty of time, and also build a future version with a 64mm EDF as a parkjet. You crafty builders can probably just look at the pic and see exactly how it's done, with a few through cuts and some score cuts at the bends.